The bus left Havana and drove westwards towards a place called Viniales. After a short two hour ride we arrived there and once the bus entered the terminal we were greeted by dozens of people.The advantage of this change is that: 1. it improves the response time after every asked word by double. 2. Some do not want to save their lessons, they just want to test it without results being collected...In order to get to this hidden lake one would have to row beneath a cave. On the other side of the cave the five of us were alone. The lake was surrounded by limestone mountains covered with tropical trees.